Cleaning brush



FIG. 1 is a front elevation view of a cleaning brush.

FIG. 2 is a rear elevation view of the cleaning brush.

FIG. 3 is a left side elevation view of the cleaning brush.

FIG. 4 is a right side elevation view of the cleaning brush.

FIG. 5 is a top plan view of the cleaning brush.

FIG. 6 is a bottom plan view of the cleaning brush; and,

FIG. 7 is a top perspective view of the cleaning brush. 

CLAIM We claim the ornamental design for a cleaning brush, as shown and described. 